'I never knew sobriety was possible for me': Demi Lovato reaches three year anniversary of clean living... thanks her family and fans on Twitter 

In her early teen years, she could not go 30 minutes without cocaine or alcohol and also suffered from eating disorders and self-harming.

But as of late, her drug-addled lifestyle is a remnant of her past as Demi Lovato announced on her Twitter page that she celebrated her three year anniversary of sobreity on Sunday.

The 22-year-old former Disney Channel star thanked her loved ones for their encouraging support writing: 'I never knew sobriety was possible for me.'

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Three years clean: Demi Lovato celebrated her three year anniversary of being sober on Sunday (pictured at Good Morning America on March 12)

Three years clean: Demi Lovato celebrated her three year anniversary of being sober on Sunday (pictured at Good Morning America on March 12)

Demi celebrated her milestone on social media with her family and fans and received overwhelming love via texts and tweets.

'I'm still catching up to texts and congrats tweets. Thank everyone who has supported my journey. I never knew sobriety was possible for me,' she commented.

'But with the love and support I've been given from my friends, fans and family... I now celebrate my 3rd birthday. Thank you to everyone.'

Adding: 'I love you all #3.'

Grateful: The 22-year-old singer thanked her fans with a series of tweets on her Twitter page on Sunday

Grateful: The 22-year-old singer thanked her fans with a series of tweets on her Twitter page on Sunday

Out of control: The former Disney Channel star could not go 30 minutes without cocaine or alcohol and also suffered from eating disorders and self-harming (pictured in 2012)

Out of control: The former Disney Channel star could not go 30 minutes without cocaine or alcohol and also suffered from eating disorders and self-harming (pictured in 2012)

Three years prior, Demi was overcoming her struggle with substance abuse and alcoholism but most of all 'an addiction that made her a manipulator and a liar.'

She was 19-years-old and at the height of her Disney Channel fame, still reveling from the mega success of her 2008 teen TV film Camp Rock.

'I couldn't go 30 minutes to an hour without cocaine and I would bring it on airplanes,' she confessed in a tell-all interview in 2013.

'I had all the help in the world, but I didn't want it. When I hit that moment I was like, "it's no longer fun when you're doing it alone,"' she recalled. 'That is alcoholic behavior, it's no longer I'm young and rebellious and out having fun, it was, wow, I'm one of those people. I got to get my act together.'

Onward and upward: Demi looked happier and healthier getting back to her music career (pictured in 2012)

Onward and upward: Demi looked happier and healthier getting back to her music career (pictured in 2012)

She was sent to rehab in 2010 after allegedly punching female backup dancer Alex Welch.

The songbird had three months of inpatient treatment at the Timberline Knolls residential centre in Illinois.

Demi learned that she had been using all her addictions – the drugs, alcohol, self-harming and her eating disorder – to give herself a false sense of control.

'I was working to this gruelling schedule and while I couldn't stop the momentum of that, I believed, wrongly, that my addictive behaviours were something that I was in charge of.'

In addition to her immediate family members, her longtime love Wilmer Valderrama was right by her side motivating her to live a more healthy lifestyle.

Touching message: Boyfriend Wilmer Valderrama commemorated Demi's sobriety milestone on his Instagram account on Sunday

Touching message: Boyfriend Wilmer Valderrama commemorated Demi's sobriety milestone on his Instagram account on Sunday

A photo posted by Demi Lovato (@ddlovato) on

On Sunday, he shared a touching message on his Instagram account to commemorate her impressive anniversary.

'Today we lay another stone together,' he wrote.

'It is now 3 years since you said: I am more important then any past, demon, disorder or addiction.. Where you decided that YOUR life was worth living while loving yourself.. And I'm sure glad you did... I knew then the woman you've become now.. I am proud and honor to be front row to see the world you are about to change.

Ending the sweet note with: 'I love you Demi.'

Demi revealed to Fitness magazine that if it were not for Wilmer, she would've relapsed.

'I was obsessing over food and terrified of it at the same time, Valderrama called me out on it,' she shared.

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